Enter an IP address and click scan to test against 80+ blacklists.
Understanding IP Blacklists
Security systems and email providers maintain global databases called RBLs (Real-time Blackhole Lists) and WAF blocklists. These lists catalog IP addresses associated with spam, proxy networks, malware distributors, or compromised server ranges. When you connect to a website, the firewall checks your IP against these databases and blocks access if a match is found.
How to Clean a Blacklisted IP
If your IP is blacklisted, you can submit a removal request on the database operator's site (e.g., Spamhaus or Barracuda). However, for web scraping or bulk outreach, utilizing **residential proxies** is the most effective way to avoid blocklists, as they assign clean residential ISP ranges.
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